native-shell-client: Add recipe

native-shell-client: Add recipe

Add recipe for native-shell-client simple agl-shell protocol client.
It can be used for testing agl-compositor and also enables using it
in simple usecases such as displaying the output from guest VMs with
QEMU+KVM.

Bug-AGL: SPEC-4618

Change-Id: I16b7c8b703b2aa3c875b7ffd78b24021eafd3a7f
Signed-off-by: Scott Murray <scott.murray@konsulko.com>
Reviewed-on: https://gerrit.automotivelinux.org/gerrit/c/AGL/meta-agl/+/28186
Tested-by: Jenkins Job builder account
ci-image-build: Jenkins Job builder account
ci-image-boot-test: Jenkins Job builder account
Reviewed-by: Jan-Simon Moeller <jsmoeller@linuxfoundation.org>